Foreword: I've been a Nikon disciple for years and accordingly already have some nice lenses for Nikon DSLR cameras. A few months ago my work bought a Panasonic GH5 for filming projects and now I wanted to be able to adapt my existing lenses to the new camera. Since I have already had good experiences with K&F Concept, the decision on an adapter was easy. Review: The adapter arrived well and safely packed in a small plastic box, which is also great for further transport and storage. First of all, it must be said that the adapter itself is unfortunately "stupid". It does not offer any electronics with which the camera can communicate. But this has one advantage: a very reasonable price. The camera also doesn't seem to have any problems with exposure metering. For the example photos (GH5 with Sigma 35mm 1.4 with an open aperture) I used the aperture priority. The aperture setting ring feels very valuable - as does the rest of the adapter. Nothing rattles, nothing looks fragile, the teeth snap into place cleanly. Personally, I would have wished for a slightly larger setting range for the aperture, but after a short period of getting used to it, you get along well with it. Overall, I can recommend the adapter without reservation. If you have any questions, please ask, I'll try to answer them as soon as possible :-)